Effects of temperature on the foraging and growth rate of juvenile common carp, Cyprinus carpio

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Authors: Oyugi, D.O., Cucherousset, J., Baker, D.J. and Britton, J.R.

Journal: Journal of Thermal Biology

Volume: 37

Issue: 1

Pages: 89-94

eISSN: 1879-0992

ISSN: 0306-4565

DOI: 10.1016/j.jtherbio.2011.11.005

Temperature had a significant and positive effect on the foraging and growth of juvenile common carp Cyprinus carpio (90-105mm) between 16 and 28°C. Metrics measured were feeding rate (items s -1), functional response (feeding rate as a function of food density), specific growth rate and incremental fork lengths. Experiments that were conducted at 16, 20, 24 and 28°C and used two food types revealed a strong thermal influence on foraging, with the highest feeding rates achieved at 24°C. Functional responses also revealed optimal feeding rates in relation to food density occurred at temperatures >20°C. Specific growth rate and incremental fork lengths were depressed at 16 and 28°C when compared to those achieved at 20 and 24°C. These outputs suggest an increase in foraging and growth of C. carpio according to a thermal gradient that were maximal between 24 and 28°C. © 2011 Elsevier Ltd.

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